Question 1

Blue light differs from red light in that

Accepted Answer

A) blue light has a higher energy than red light. 
B) blue light has a lower energy than red light. 
C) blue light has a shorter wavelength than red light. 
D) blue light has a longer wavelength than red light. 
E) More than one of the other choices are correct. 
A) blue light has a higher energy than red light. 
B) blue light has a lower energy than red light. 
C) blue light has a shorter wavelength than red light. 
D) blue light has a longer wavelength than red light. 
E) More than one of the other choices are correct.

Question 2

The Very Long Baseline Array (VLBA)

Accepted Answer

A) is the highest resolution optical telescope ever built. 
B) is located in Arecibo, Puerto Rico. 
C) is a matched pair of 8 m telescopes, one of which is in Chile and the other in Hawaii. 
D) is an air-borne infrared telescope. 
E) is a set of radio telescopes linked together electronically to provide very high resolution. 
A) is the highest resolution optical telescope ever built. 
B) is located in Arecibo, Puerto Rico. 
C) is a matched pair of 8 m telescopes, one of which is in Chile and the other in Hawaii. 
D) is an air-borne infrared telescope. 
E) is a set of radio telescopes linked together electronically to provide very high resolution.

Question 3

__________________ is/are caused by the interaction of light waves with the telescope's apertures and thus limit the detail visible in an image.

Accepted Answer

The answer of __________________ is/are caused by the interaction of...

Question 4

Radio telescopes have poor resolving power because

Accepted Answer

A) their diameters are so large. 
B) the energy they receive is not electromagnetic radiation. 
C) radio waves have long wavelengths. 
D) their diameters are so large and the energy they receive is not electromagnetic radiation. 
E) None of the other choices are correct. 
A) their diameters are so large. 
B) the energy they receive is not electromagnetic radiation. 
C) radio waves have long wavelengths. 
D) their diameters are so large and the energy they receive is not electromagnetic radiation. 
E) None of the other choices are correct.

Question 5

A ___________ has a few million light-sensitive diodes in an array typically about a half-inch square.

Accepted Answer

A) photometer 
B) charge-coupled device 
C) spectrograph 
D) photographic plate 
E) grating 
A) photometer 
B) charge-coupled device 
C) spectrograph 
D) photographic plate 
E) grating

Question 6

Which of the following features of a telescope determines its light-gathering power

Accepted Answer

A) the focal length of the primary lens 
B) the focal length of the eyepiece 
C) the diameter of the primary lens 
D) length of the telescope tube 
E) None of the other choices are correct. 
A) the focal length of the primary lens 
B) the focal length of the eyepiece 
C) the diameter of the primary lens 
D) length of the telescope tube 
E) None of the other choices are correct.

Question 7

As shown, the single lens splits the light according to wavelength, a condition known as _______.

Accepted Answer

A) achromatic aberration 
B) blurring aberration 
C) chromatic aberration 
D) seeing 
A) achromatic aberration 
B) blurring aberration 
C) chromatic aberration 
D) seeing

Question 8

How does the nature of radio waves allow a radio telescope to use a wire mesh surface

Accepted Answer

Because radio wavelengths are in the ran

Question 9

____ has (have) wavelengths that are shorter than visible light.
I.Gamma rays 
II.Ultraviolet light
III.Infrared radiation
IV.X-rays

Accepted Answer

A) I & II 
B) I & IV 
C) II & III 
D) II, III, & IV 
E) I, II, & IV 
A) I & II 
B) I & IV 
C) II & III 
D) II, III, & IV 
E) I, II, & IV

Question 10

What are some new techniques and technologies that enable construction of optical telescopes with very large mirrors

Accepted Answer

Constructing large-mirror optical telesc

Question 11

The main reason for building large optical telescopes on Earth's surface is

Accepted Answer

A) that there is a lot of money in science that needs to get spent. 
B) to collect as much light as possible from faint objects. 
C) to nullify the blurring effects of the Earth's atmosphere and thus produce higher resolution images. 
D) to bring astronomical objects closer to make them brighter. 
E) that the warm temperatures of the Earth's surface allow for easier telescope operation. 
A) that there is a lot of money in science that needs to get spent. 
B) to collect as much light as possible from faint objects. 
C) to nullify the blurring effects of the Earth's atmosphere and thus produce higher resolution images. 
D) to bring astronomical objects closer to make them brighter. 
E) that the warm temperatures of the Earth's surface allow for easier telescope operation.

Question 12

List the advantages the Hubble Space Telescope has over ground-based telescopes.

Accepted Answer

The HST is not limited to the atmospheri

Question 13

Far-ultraviolet rays have short wavelengths, low energies, and travel at the speed of sound.

Accepted Answer

A) True 
 B)False

Question 14

All radio telescopes are refracting telescopes.

Accepted Answer

A) True 
 B)False

Question 15

There are _______ nanometers in one meter.

Accepted Answer

A) 1 × 103 
B) 1 × 10−3 
C) 1 × 109 
D) 1 × 10−9 
E) 400 
A) 1 × 103 
B) 1 × 10−3 
C) 1 × 109 
D) 1 × 10−9 
E) 400

Question 16

Observations of radio waves from astronomical objects suffer from poorer resolution than visible observations with the same size dish (or mirror) because

Accepted Answer

A) the signals are so weak in the radio region. 
B) the wavelength of radio waves is much longer than the wavelengths of visible light. 
C) radio telescopes are generally much smaller in diameter than optical telescopes. 
D) it is very difficult to detect radio waves. 
E) radio telescopes don't use solid mirrors. 
A) the signals are so weak in the radio region. 
B) the wavelength of radio waves is much longer than the wavelengths of visible light. 
C) radio telescopes are generally much smaller in diameter than optical telescopes. 
D) it is very difficult to detect radio waves. 
E) radio telescopes don't use solid mirrors.

Question 17

Spectrographs use a prism or a grating to spread starlight according to wavelength.

Accepted Answer

A) True 
 B)False

Question 18

___________ is absorbed by ozone in Earth's atmosphere that is located between 20 km and 40 km above Earth's surface. Therefore, telescopes to observe this radiation must be placed in space.

Accepted Answer

A) Infrared radiation 
B) Ultraviolet radiation 
C) Radio wave radiation 
D) X-ray radiation 
E) Visible light 
A) Infrared radiation 
B) Ultraviolet radiation 
C) Radio wave radiation 
D) X-ray radiation 
E) Visible light

Question 19

Which kind of telescope is shown and where is it located

Accepted Answer

A) radio, space 
B) radio, ground 
C) optical, space 
D) optical, ground 
A) radio, space 
B) radio, ground 
C) optical, space 
D) optical, ground

Question 20

The light-gathering power of a telescope is directly proportional to

Accepted Answer

A) the diameter of the primary mirror or lens. 
B) the focal length of the primary mirror or lens. 
C) the ratio of the focal lengths of its primary mirror or lens and its eyepiece. 
D) the length of the telescope tube. 
E) the diameter of the eyepiece. 
A) the diameter of the primary mirror or lens. 
B) the focal length of the primary mirror or lens. 
C) the ratio of the focal lengths of its primary mirror or lens and its eyepiece. 
D) the length of the telescope tube. 
E) the diameter of the eyepiece.

Blue light differs from red light in that

The Very Long Baseline Array (VLBA)

__________________ is/are caused by the interaction of light waves with the telescope's apertures and thus limit the detail visible in an image.

Radio telescopes have poor resolving power because

A ___________ has a few million light-sensitive diodes in an array typically about a half-inch square.

Which of the following features of a telescope determines its light-gathering power

As shown, the single lens splits the light according to wavelength, a condition known as _______.

How does the nature of radio waves allow a radio telescope to use a wire mesh surface

____ has (have) wavelengths that are shorter than visible light. I.Gamma rays II.Ultraviolet light III.Infrared radiation IV.X-rays

What are some new techniques and technologies that enable construction of optical telescopes with very large mirrors

The main reason for building large optical telescopes on Earth's surface is

List the advantages the Hubble Space Telescope has over ground-based telescopes.

Far-ultraviolet rays have short wavelengths, low energies, and travel at the speed of sound.

All radio telescopes are refracting telescopes.

There are _______ nanometers in one meter.

Observations of radio waves from astronomical objects suffer from poorer resolution than visible observations with the same size dish (or mirror) because

Spectrographs use a prism or a grating to spread starlight according to wavelength.

___________ is absorbed by ozone in Earth's atmosphere that is located between 20 km and 40 km above Earth's surface. Therefore, telescopes to observe this radiation must be placed in space.

Which kind of telescope is shown and where is it located

The light-gathering power of a telescope is directly proportional to

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

Exam 5: Light and Telescopes

Blue light differs from red light in that

The Very Long Baseline Array (VLBA)

__________________ is/are caused by the interaction of light waves with the telescope's apertures and thus limit the detail visible in an image.

Radio telescopes have poor resolving power because

A ___________ has a few million light-sensitive diodes in an array typically about a half-inch square.

Which of the following features of a telescope determines its light-gathering power

As shown, the single lens splits the light according to wavelength, a condition known as _______.

How does the nature of radio waves allow a radio telescope to use a wire mesh surface

____ has (have) wavelengths that are shorter than visible light. I.Gamma rays II.Ultraviolet light III.Infrared radiation IV.X-rays

What are some new techniques and technologies that enable construction of optical telescopes with very large mirrors

The main reason for building large optical telescopes on Earth's surface is

List the advantages the Hubble Space Telescope has over ground-based telescopes.

Far-ultraviolet rays have short wavelengths, low energies, and travel at the speed of sound.

All radio telescopes are refracting telescopes.

There are _______ nanometers in one meter.

Observations of radio waves from astronomical objects suffer from poorer resolution than visible observations with the same size dish (or mirror) because

Spectrographs use a prism or a grating to spread starlight according to wavelength.

___________ is absorbed by ozone in Earth's atmosphere that is located between 20 km and 40 km above Earth's surface. Therefore, telescopes to observe this radiation must be placed in space.

Which kind of telescope is shown and where is it located

The light-gathering power of a telescope is directly proportional to

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters